BriefHumidity Indicator Card (HIC) is a convenient and cheap method to check the humidity. We can judge the humidity inside the packing from the color changed. Each card marked the warning when the color has changed, then the package should be replaces the new desiccant. The colour of indicator dot turns, meaning that RH in the package has or had been reached the RH value of that dot. So it is easy for us to estimate the validity of desiccant so as to change desiccant in time. At present, humidity indicator cards are more and more applied in packages of electronics and optical components, which are sensitive to humidity, effectively improving the quality of products. All HIC products meet the requirements of RoHS, DMF-Free, MIL-I-8835A, JEDEG and GJB2494-95 standard.Humidity Indicator Card Type